Auth0 takes a modern approach to Identity and enables organizations to provide secure access to any application, for any user. Auth0 is highly customizable, and simple yet flexible. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation.
With Auth0, you can rapidly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control.
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FusionAuth is the authentication and authorization platform engineered for developers who demand flexibility and control. Built from the ground up to integrate with any stack, every feature — from user registration to MFA and SSO — is exposed via a modern, well-documented API.
Support for every major identity protocol is included out of the box: OIDC, SAML, OAuth2, JWT, passwordless login, social sign-on, and more. Whether you’re building a greenfield app or retrofitting auth into a legacy system, FusionAuth adapts to your use case — not the other way around.
Need compliance? FusionAuth helps you meet GDPR, HIPAA, and COPPA standards quickly and reliably.
Deploy it your way: install on Linux, Windows, macOS, Docker, or Kubernetes — or go with FusionAuth Cloud, our managed SaaS hosting. No black boxes. No vendor lock-in. Just powerful, customizable auth that works the way you do.
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Ory
The missing web-scale identity and access control API. Today, 10x your security and user experience. Build secure apps over the Ory Network to reach new customers in any region of the globe with the best login experiences ever. Login is much more than just a username and a password. It is dangerous and time-consuming to build it from scratch. Ory's API first microservice architecture allows projects to be integrated at any stage. Pay for usage and not features. Ory subscription plans include advanced multi-factor authentication. Plus, advanced permissions, SSO OAuth2, OIDC multi-tenancy and more. Ory is designed for high-performance and high-scale applications on any cloud. Ory is designed with developers in mind. It allows you to quickly create your own user experience, and integrate it within your software stack. Ory's focus is on open standards, and its automated data import capabilities make migrating to legacy systems simple.
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Better Auth
Better Auth is a versatile authentication and authorization solution tailored for TypeScript, enabling developers to seamlessly integrate secure login functionalities into their applications and databases. It comes equipped with a comprehensive suite of authentication tools right from the start, offering features such as email and password login, session management, email verification, password resets, and compatibility with over 40 social login options like Google and GitHub, all requiring minimal coding effort. Designed to be compatible with a broad spectrum of contemporary frameworks, including Next.js, Nuxt, SvelteKit, Astro, and Express, it empowers teams to implement authentication irrespective of their chosen technology stack while ensuring robust TypeScript support and type safety. Furthermore, Better Auth boasts sophisticated features such as multi-factor authentication, management of multi-tenant organizations, and enterprise-level functionalities including SSO, SAML, and SCIM provisioning, making it an ideal fit for both straightforward applications and complex, large-scale systems. This flexibility allows developers to focus on building their core application features while relying on Better Auth to handle security concerns efficiently.
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